Printer&#39;s mechanical quoin



Patented dan. 9, i923.

siren sii-aras] innate PATENT @FFEQE;

ALBERT GEORG-E WORLEDGE, yF WESTCLFF-VONv-SE, AND LOUlS .SEBRIGfI-IT, 0F

' kWIJVIBLEDN, ENGLAND.

rnrn'rnns MECHANICAL acorn.

Application filed. March 11, 1922. Serial 1\To.,542,915.`

' To ,all whom t may concern being drawn up as required by means of' yBe it known that we, ALBERT Girone-n VVoR- Linnen, a British subject,residing in lNestclif-on-Sea in the county of Essex, England, and LOUISnizrerrr, a British subject, residing in Wimbledon, in the county ofSurrey, England, have invented certain new and useful improvements inPrinters Mechanical Quoins, of which the following is a specilication,referencebeing made to the accompanying drawings, forming a partthereof. y This invention relates lto quoins as used b printers forlocking up type in form or clirase. They may be used however for anyother purpose where a mechanically expanding device is required. 1

` Steel screw quoins as hitherto: made vhave .usuallycomprised a 'pairof similar blocks or plates adapted'to be forced apart by one ory moresteel wedges .working against inclined planes on the said blocks, the'wedges screw vbearings against shoulders on the blocks and adapted to beturnedby a key.

The-blocks have been guided in their eXpandn n ing movements bystudswith heads thereon engaging in vcountersunk ,recesses in theblocks, the heads of the studslimiting the eX- panding movement, sothatthe magrimum expansion was rather less than the width of one 'of theblocks.` Usually the head at one end of each stud was screwedy on, andif the f ings heads came off the blocks `could fall apart, while thewedgepiece could always fall out when its screw was removed. i Y 'f Itis the` object of the present invention to vprovide an improved form ofscrew quoiu,

for whereas the maximum expansion for a given size of quoin'has onlybeen equal to one of the blocks hitherto, the amount now obtainable bythe present invention is almost equal to the l combined thickness of twoblocks, and also to provide a quoin that when it is between the type andchase, themaj ority of` its expansion can be controlled easily andquickly by the thumbkcr linger vof one hand through the aid of its keylever in the other hand, constituting a far greater degree ofusefulness. A further object lof the invention is to provide a quointhat can be assembled easily and then securely locked together againstvaccidental dis-assembly. For this purpose a double-ended milled head.screw having on one end a right hand thread and on the othera left handthread, Controls the movements of two taper-sided nuts'acting as wedgesone at each end between two expanding blocks havingtheir ends inclinedatan angley corresponding with the taper sides lof the nuts. These wedgenutsy are .also provided with projecting edges or tongues inserted intothebottoniv of one thread each side of the milled head to actas a stoptoprevent the quoin 'falling topieces by being opened beyond itspractical limit." Arkey to operate the quoin has a 4widey end bent atright langlesfor useas'a lever topress back the type as far as possiblewhile the screw of quoinl isL being turned vwith the thumb or iinholesin the milled-head whereby theinal pressure may befexerted to VsecurelylockV the type Vin form or chase. y Referring to the accompanying draw-Fig. l is a perspect-ive view of the quoin when closed. f

Fig. 2 is a perspective view when'open,

Fig; 3 an underside view of the quoin and Fig. 4L is the operating key.`

The quoin of the present invention comprises'two blocks C, C that areadapted to be moved towards and from each other asis common in the` art.Said blocks are positioned o'n `opposite sides of a-,pair of screwswhich are -adaptedto be rotated by a rotary header. Carried on saidscrews and posiger and the otherend'is shaped to iit the tioned betweensaid side blocks C, C', are

wedge blocks B, B.

In accordancewith the present invention, f

the openingand closing movements of the side blocks C, C', are e'ectedby means that lend to convenience in the assembly of the quoin. Suchmeans consistof cooperating grooves c in the side blocks C, C', asshown.`

and corresponding grooves c being formedL in the other set of blocks.Preterablythe ribs are on the wedge blocks B, B,and the Each pair ofribs Z) and each pair ot' grooves c diverge outwardly, so to speak, fromthey head A so that by turning head` A to movek the wedge blocks towardssaid head, the side blocks will be moved apart while a reverse movementof said head and wedge blocks will, of course, bring or close lthe sideblocks together.

Such an arrangement has many advantages. The quoin can readily beassembled, it only being necessary to run the wedge block B, B on thescrews up close to head A where the ribs b and grooves c will be inreg-v istry after which the Anuts or wedgev blocks B,

B', are moved out from 'the head and thek ribs will enterthe grooves andthe quoin will be assembled. Furthermore, after the quoin is thusassembled, it may easily be locked against accidental dis-assembly bymerely inserting a small screw E in each ot' the large screws at a pointnear head A ywhere the movement of wedge blocks B, B toward the headwill be so limited as to prevent the ribs being run out of the groovesc. Accidental disassemblyof the quoin by a movement of the nuts towardshead A is thus pref vented while dis-assembly of the parts by a movementof said nuts away from the head is prevented by the side blocks C, Cbeing brought together when the wedges are moved outward. Additionally,the easy manner of assembly permits the use of elongated ribs andgrooves and the formation of the ribs integrally with their associatedblocks, all of which imparts a desired characteristic', i. e., rigidity,to the assembled quoin. y

To further add to the4 rigidity of the quoin, the bottom of one ot theside blocks .is cut away to receive laterally extendingk bottom portionsof the other side blocks, as shown in Figs. 2 and 3, the extensions K, Kone of said blocks being clearly shown in As an aidin manipulating thehead A and the associated screws, there is provided a key D (see Fig. 4)one end of which is bent at right angles to the intermediate portion andwidened as at G so that it may be inserted between the type and theinside edge of the chase and pressure applied to compress the type whilethe quoin is being expanded easily and quickly with the thumb yorfinger.

`After all slacknesshas been thus taken up,

`What we claim as'our invention is l. In a printers quoin, thecombinations of a right hand screw, a left hand screw, a rotary headbetween said screws orrotating the latter, a screw threaded wedge oneach screw, each wedge having integral divergent ribs formed thereon,and side blocks arranged on each side of the screws and having divergentslots therein for the reception of the ribs on the wedges, said slotsintersecting the side edges oi" said blocks, and said` side blocks beingmovable toward each other by moving the wedges away from said head,whereby outward movement of ksaid wedges is limited by the side blocks.

2. In a printers quoin, the combination of a right hand screw, a letthand screw, a rotary head between said screws for rotating the latter, ascrew threaded wedge on each screw, diverging ribs' on each screwthreaded wedge, side blocks arrangedv on each side of the screws andhaving divergent slots therein 'for the reception of the ribs on saidwedges, and means on said screws for limiting the'movement of the wedgeswhereby accidental displacement of said ribs from said slots'isprevented.

3. In a printers quoin the combination with 'a rotatable head, of aright handed screw on one end ofthe head, a left handed .screw on theother endet the head, oppositely inclined wedge-shaped members on thetwo screws, side blocks arranged on opposite sides of the screw,oppositely inclined surfaces on each block adapted to be en'- vgaged bythe wedge-shaped members,'pro

jections on the wedge-shaped members and recesses on the side blocks toreceiveA said projections to retain the side blocks and wedges inposition to form an integral body.

4t.k `ln a printers quoin, the combination of a pair of oppositelythreaded screws, a rotary head` for rotating said screws, a wedge blockon each screw, a side block on each side of `the screw adaptedy toengage the wedge blocks, and cooperating elements on saidwedge and sideblocks for separating the side blocks, said cooperating elementsextending diagonally of and intersecting the side edges of said blocks,and said side blocks being movable toward each other by moving thewedges away from said head', whereby outward movement of sa'id wedges islimited by the side blocks.

5. In` a printers quoin, the combination of a pair of oppositelythreaded screws, a rotary head for rotating said screws, side blocks onopposite sides ci' the screws, wedge blocks on the screws and movableaway from the rotary head to bring the side blocks together, whereby theside blocks when closed together will limit the outward movement of thewedge blocks, and means for limiting the movement ot the wedges towardsthe rotary head whereby the separation of the side blocks is limited andaccidental dis-assembly of the quoin is prevented.

6. In a printersi quoin, the combination of a pair of oppositelythreaded screws, a rotary head for rotating said screws, side blocks onopposite sides of the screws, wedge blocks on said screws and movabletoward the rotary head for moving the side blocks away from each other,cooperating elements onthe wedge and side blocks for e'eeting theseparation of the side blocks, said cooperating elements kbeingdisengageable by moving the wedge blocks toward the rotary head andmoving the side blocks away from each other, and removable means forlimiting the said movements of said wedge and side blocks to preventaccidental disengagement of said cooperating elements.

7. In a printers quoin, the combination of a pair of oppositely threadedscrews, a rotary head for rotatin'gsaid screws, a side block on eachside of said screws, wedge blocks` on said screws, and cooperating'elements on said wedge and side blocks for efecting separation of theside blocks upon movement of the wedge blocks toward the rotary head,said cooperating elements bebloeks towards said head and moving the sideblocks away from each other.

ALBERT GEORGE woELEneE.y Lome SEEEIGHT.

ving disengageable by moving the wedge

